kern/include/cpu_feat.h

   1 /* Copyright (c) 2016 Google Inc.
   2  * Barret Rhoden <brho@cs.berkeley.edu>
   3  * See LICENSE for details.
   4  *
   5  * Set and query the existence of cpu features.
   6  *
   7  * Note that I didn't provide a "cpu_clr_feat()" yet.  These are intended to be
   8  * write-once, read-many. */
   9
  10 #pragma once
  11
  12 #include <ros/procinfo.h>
  13 #include <bitops.h>
  14
  15 static inline bool cpu_has_feat(int feature)
  16 {
  17         return test_bit(feature, __proc_global_info.cpu_feats);
  18 }
  19
  20 static inline void cpu_set_feat(int feature)
  21 {
  22         __set_bit(feature, __proc_global_info.cpu_feats);
  23 }